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摘 要
在当今世界由于大宗货物流通的需求变得越来越巨大，水运作为相对而言最为经济的货运方式，其发展的需求不断扩大。船闸作为帮助船舶克服水位落差，使之能在江河湖海间顺利穿行的一种重要的通航建筑物，其重要性不言而喻。许多船闸受到潮汐产生的双向水头的影响，为了确保船舶的安全，这是必须克服的障碍。在江河的中下游区域内的船闸往往受潮汐力影响，由于潮涨潮落产生的双向水头非常不利于船舶的航行。目前我国长江中下游流域的船闸开始普及三角闸门的使用，根据已建成船闸的情况来看，三角闸门能有效的阻止双向水头对于船舶过闸的影响。并可以作为输水系统的一部分，辅助船闸输水。
本设计为上海大治河二线船闸总体设计与结构计算，具体内容包括：船闸总平面布置设计、闸首、闸室断面设计、输水系统设计、荷载计算、抗滑抗倾稳定性验算、配筋等等。
关键词：中下游船闸，双向水头，上海大治河，总体设计
Abstract
In today's world，due to the increasing demand for the circulation of bulk goods，water transportation，as the most economical mode of freight transport，has been expanding its development demand. As an important navigational structure to help ships overcome the water level drop and make them travel smoothly between rivers and lakes，the importance of ship lock is self-evident. Many locks are affected by tide-induced two-way water heads，which must be overcome in order to ensure the safety of ships. The lock in the middle and lower reaches of the river is often affected by tidal forces，and the two-way head produced by the rising and falling tide is not conducive to the navigation of the ship. At present，the middle and lower reaches of the Yangtze River in China According to the situation that the lock has been built，the sluice gate can effectively prevent the influence of the two-way head on the ship crossing. And it can be used as a part of the water delivery system to assist the shiplock to carry water.
This design is the overall design and structural calculation of Shanghai Dazhihe second-line ship lock，including the overall layout design of the lock，the head of the lock，the section design of the lock chamber，the design of the water conveyance system，the calculation of the load，the checking calculation of the anti-slip and anti-tipping stability，the reinforcement and so on.
Key words: middle and lower reaches ship lock，two-way head，Shanghai Dazhihe，general design
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